I hear what you are saying: there is much to be gained in having a "feed specialist" making up feed for you.
I thought it was an interesting question if, say, an organic broadacre farmer (linseed, sunflower, camelina, grains) could produce the main ingredients for quail feed himself, because...
I have come across some useful info in "Nutrient Requirements of Poultry: Ninth Revised Edition, 1994" on GoogleBooks under the following link: http://books.google.ch/books?id=sy8rAAAAYAAJ, page 45.
Please share any recipes you are using if you do not buy pre-mixed feed.
Here the table...